16649238 has 8 divisors (see below), whose sum is σ = 33298488. Its totient is φ = 5549744.

The previous prime is 16649221. The next prime is 16649249. The reversal of 16649238 is 83294661.

16649238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

16649238 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16649196 and 16649205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387431 + ... + 1387442.

It is an arithmetic number, because the mean of its divisors is an integer number (4162311).

Almost surely, 2^16649238 is an apocalyptic number.

16649238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16649238 is a wasteful number, since it uses less digits than its factorization.

16649238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774878.

The product of its digits is 62208, while the sum is 39.

The square root of 16649238 is about 4080.3477792953. The cubic root of 16649238 is about 255.3474080657.

The spelling of 16649238 in words is "sixteen million, six hundred forty-nine thousand, two hundred thirty-eight".